Physiological response of temperature shocks in turbot and sole

In the present study, selected temperature drops were examined to investigate the effects of live chilling on stress and welfare in turbot and sole. This study demonstrated that rapid temperature drops from 11°C–12°C and 18°C–18.7°C to 4°C–0°C in turbot resulted in higher blood sodium and potassium...

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Bibliographic Details
Published in:Journal of Applied Aquaculture
Main Authors: Foss, Atle, Imsland, Albert Kjartan Dagbjartarson, van de Vis, Hans, Abbink, Wout, Lambooij, Bert, Roth, Bjørn
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
Hypothermia
live chilling
sole
temperature
turbot
Slaughter
Turbot
Online Access:https://research.wur.nl/en/publications/physiological-response-of-temperature-shocks-in-turbot-and-sole
https://doi.org/10.1080/10454438.2018.1548404
Description
Summary:In the present study, selected temperature drops were examined to investigate the effects of live chilling on stress and welfare in turbot and sole. This study demonstrated that rapid temperature drops from 11°C–12°C and 18°C–18.7°C to 4°C–0°C in turbot resulted in higher blood sodium and potassium at 0°C (164 mmol l−1, 4.4 mmol −1) compared to 4°C (153 mmol l−1, 3.1 mmol −1), indicating osmoregulatory disturbance. A rapid temperature drop from 18°C to 0°C in Senegal sole also resulted in higher blood sodium and potassium at 0°C (164 mmol l−1, 4.8 mmol −1) compared to the control group at 18°C (157 mmol l−1, 3.2 mmol −1). Based on present findings, we conclude that immersion in ice water will have a negative effect on the animal osmoregulatory capacity, and we recommend that turbot and sole are stunned before slaughter.

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